From fd1dc5f008056eca9dfa9feaf068db232baa9418 Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Mon, 26 Oct 2026 22:55:40 +0000
Subject: [PATCH] Decompile fn_18245 (RemoveDirectoryTree)

Batch #870 by ragnarok-clanker: 0 byte-identical, 1 confirmed by peer review.

- fn_18245 RemoveDirectoryTree: logic confirmed by peer review

Reviewed-by: ragnarok-clanker
Adds to the build: Source/File/DirectoryRemoval.cpp
---
 Source/File/DirectoryRemoval.cpp | 46 ++++++++++++++++++++++++++++++++
 Source/File/DirectoryRemoval.h   |  6 +++++
 compile.json                     |  1 +
 3 files changed, 53 insertions(+)
 create mode 100644 Source/File/DirectoryRemoval.cpp
 create mode 100644 Source/File/DirectoryRemoval.h

diff --git a/Source/File/DirectoryRemoval.cpp b/Source/File/DirectoryRemoval.cpp
new file mode 100644
index 0000000..206353f
--- /dev/null
+++ b/Source/File/DirectoryRemoval.cpp
@@ -0,0 +1,46 @@
+#include "File/DirectoryRemoval.h"
+
+#include <cstring>
+#include <direct.h>
+#include <io.h>
+#include <list>
+#include <string>
+#include <sys/stat.h>
+#include <windows.h>
+
+// FUNCTION: fn_18245
+void RemoveDirectoryTree(const char* path) {
+  std::list<std::string> files;
+  std::list<std::string> directories;
+  WIN32_FIND_DATAA found{};
+  char filename[2048];
+  std::strcpy(filename, path);
+  std::strcat(filename, "\\*.*");
+  HANDLE search = FindFirstFileA(filename, &found);
+  if (search == INVALID_HANDLE_VALUE) {
+    FindClose(search);
+  } else {
+    do {
+      if (found.cFileName[0] == '.' && (found.cFileName[1] == 0 || (found.cFileName[1] == '.' && found.cFileName[2] == 0))) {
+        continue;
+      }
+      if ((found.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0) {
+        directories.push_back(std::string(found.cFileName));
+      } else {
+        files.push_back(std::string(found.cFileName));
+      }
+    } while (FindNextFileA(search, &found));
+    FindClose(search);
+
+    std::strcpy(filename, path);
+    std::strcat(filename, "\\");
+    for (const std::string& file : files) {
+      _chmod((std::string(filename) + file).c_str(), _S_IWRITE);
+      _unlink((std::string(filename) + file).c_str());
+    }
+    for (const std::string& directory : directories) {
+      RemoveDirectoryTree((std::string(filename) + directory).c_str());
+    }
+  }
+  _rmdir(path);
+}
diff --git a/Source/File/DirectoryRemoval.h b/Source/File/DirectoryRemoval.h
new file mode 100644
index 0000000..34fa762
--- /dev/null
+++ b/Source/File/DirectoryRemoval.h
@@ -0,0 +1,6 @@
+#ifndef RAGNAROK_SOURCE_FILE_DIRECTORYREMOVAL_H
+#define RAGNAROK_SOURCE_FILE_DIRECTORYREMOVAL_H
+
+void RemoveDirectoryTree(const char* path);
+
+#endif
diff --git a/compile.json b/compile.json
index f69bb01..f31c94d 100644
--- a/compile.json
+++ b/compile.json
@@ -387,6 +387,7 @@
   "Source/Contents/World/WorldTerrainPicking.cpp": 4,
   "Source/Contents/World/WorldViewSpatial.cpp": 3,
   "Source/File/CommonObject.cpp": 1,
+  "Source/File/DirectoryRemoval.cpp": 1,
   "Source/File/File.cpp": 1,
   "Source/File/FileCreation.cpp": 1,
   "Source/File/FileEnumeration.cpp": 1,